mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-08-07 21:19:47 -04:00
132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
/* $NetBSD: stub_ebus.c,v 1.4 2014/07/25 08:10:32 dholland Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2010 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code was written by Alessandro Forin and Neil Pittman
|
|
* at Microsoft Research and contributed to The NetBSD Foundation
|
|
* by Microsoft Corporation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* Before including this file for "foo" you need to define
|
|
#define STUBSTRING "foo"
|
|
#define STUBBANNER "8MB flash memory" -- tell the user what it is
|
|
#define STUBSTRUCT _Flash -- whatever that struct is defined in emipsreg.h
|
|
#define STUBMATCH(_f_) (((_f_)->BaseAddressAndTag & FLASHBT_TAG) == PMTTAG_FLASH)
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <sys/conf.h>
|
|
|
|
#include <emips/ebus/ebusvar.h>
|
|
#include <emips/emips/machdep.h>
|
|
#include <machine/emipsreg.h>
|
|
|
|
/*
|
|
* Device softc
|
|
*/
|
|
struct stub_softc {
|
|
struct STUBSTRUCT *sc_dp;
|
|
};
|
|
|
|
static int stub_ebus_match (device_t, cfdata_t, void *);
|
|
static void stub_ebus_attach (device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(stub_ebus, sizeof (struct stub_softc),
|
|
stub_ebus_match, stub_ebus_attach, NULL, NULL);
|
|
|
|
static int
|
|
stub_ebus_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct ebus_attach_args *ia = aux;
|
|
struct STUBSTRUCT *f = (struct STUBSTRUCT *)ia->ia_vaddr;
|
|
|
|
if (strcmp(STUBSTRING, ia->ia_name) != 0)
|
|
return (0);
|
|
if ((f == NULL) || (! STUBMATCH(f)))
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
stub_ebus_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct ebus_attach_args *ia =aux;
|
|
struct stub_softc *sc = device_private(self);
|
|
|
|
sc->sc_dp = (struct STUBSTRUCT*)ia->ia_vaddr;
|
|
|
|
#if DEBUG
|
|
printf(" virt=%p", (void*)sc->sc_dp);
|
|
#endif
|
|
printf(": %s\n", STUBBANNER);
|
|
|
|
}
|
|
|
|
/* Required funcs
|
|
*/
|
|
static int stubopen(dev_t device, int flags, int fmt, struct lwp *process);
|
|
static int stubclose(dev_t device, int flags, int fmt, struct lwp *process);
|
|
|
|
/* just define the character device handlers because that is all we need */
|
|
const struct cdevsw stub_cdevsw = {
|
|
.d_open = stubopen,
|
|
.d_close = stubclose,
|
|
.d_read = noread,
|
|
.d_write = nowrite,
|
|
.d_ioctl = noioctl,
|
|
.d_stop = nostop,
|
|
.d_tty = notty,
|
|
.d_poll = nopoll,
|
|
.d_mmap = nommap,
|
|
.d_kqfilter = nokqfilter,
|
|
.d_discard = nodiscard,
|
|
.d_flag = 0
|
|
};
|
|
|
|
/*
|
|
* Handle an open request on the device.
|
|
*/
|
|
static int
|
|
stubopen(dev_t device, int flags, int fmt, struct lwp *process)
|
|
{
|
|
return 0; /* this always succeeds */
|
|
}
|
|
|
|
/*
|
|
* Handle the close request for the device.
|
|
*/
|
|
static int
|
|
stubclose(dev_t device, int flags, int fmt, struct lwp *process)
|
|
{
|
|
return 0; /* again this always succeeds */
|
|
}
|